Difenoxuron, 100 µg/ml, Acetonitrile, 1ml

Theophylline

N-Nitrososarcosine, 1000µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 13256-22-9

Mass-Labelled PCDD Internal Standard Solution, 1.2ml, nonane